U1 Acids and Bases

Question 1

What is the range of the pH scale?

Answer 1

below 0 to above 14

Question 2

What does the pH scale indicate?

Answer 2

The hydrogen ion concentration

Question 3

What does a high concentration of hydrogen ions cause?

Answer 3

An acid

Question 4

What does a high concentration of hydroxide ions cause?

Answer 4

An Alkali

Question 5

What does a pH below 7 indicate?

Answer 5

An acid, containing more hydrogen ions than hydroxide

Question 6

What does a pH above 7 indicate?

Answer 6

An alkali , containing more hydroxide ions than hydrogen

Question 7

What do soluble non-metal oxides dissolve to form in water?

Answer 7

An acidic solution

Question 8

What do soluble metal oxides dissolve in water to form?

Answer 8

An alkaline solution

Question 9

What dissolves in an acid to neutralise it?

Answer 9

Bases such as ;
Metal Oxides
Metal Hydroxides
Metal Carbonates
Ammonia

Question 10

Formula for Water and a metal oxide

Answer 10

Water + Metal Oxide -> Metal Hydroxide

Question 11

Metal Oxide + Acids forms

Answer 11

Water

Question 12

Metal Hydroxide + Acid forms

Answer 12

Water

Question 13

Metal Carbonate + Acid forms

Answer 13

Water + CO2